1. He has been studying here for three years, by next summer _______________________ (他就毕业).
　　2. Today the small town is better _____________________ (保护自己免遭洪水危害) than it was 20 years ago.
　　3. You remain about the same as when you parted with us _____________________ (只是更瘦了一点).
　　4. He has a large collection of books, ___________________ (其中有许多用英语写的).
　　5. The special needs of old people housing ______________________ （已引起了房屋设计者的更多关注）.
　　答案：(略)